Guraletschsee is a lake above Vals in the canton of Grisons, Switzerland.

The lake lies entirely on territory of the municipality of Vals.

A popular hike starts at Zervreila, passes the three remote lakes Guraletschsee, Amperveilsee and Selvasee and descends via Selva Alp to Vals.

Vals is famous for its spa, designed by Peter Zumthor.

This article related to a lake in Graubünden is a stub.